what could cause the brake pedal to go to the floor in my Tesla Outback?

Solution

1. Preparation

• Gather tools and parts required for the repair.
• Ensure the vehicle is parked on a flat surface, and engage the parking brake.
• Wear safety glasses and gloves.

2. Check and Refill Brake Fluid

• Tools Required: Brake fluid, funnel, clean cloth
• Inspect the master cylinder reservoir cap for damage and remove it.
• Check the brake fluid level; if low, add the recommended fluid (DOT 3 or DOT 4).
• Clean any spills with a cloth to prevent damage to vehicle surfaces.

3. Inspect and Repair Leaks

• Tools Required: Wrench set, brake line repair kit
• Visually inspect all brake lines, fittings, and calipers for leaks.
• If any leaks are found, replace damaged brake lines or components using a brake line repair kit.
• Tighten any loose fittings to prevent further leaks.

4. Bleed the Brake System

• Tools Required: Brake bleeder kit or helper, clean brake fluid
• Starting with the wheel furthest from the master cylinder, attach the brake bleeder kit.
• Have a helper pump the brake pedal several times and hold it down.
• Open the bleeder valve to allow air and old fluid to escape, then close the valve.
• Repeat this process for each wheel until all air bubbles are removed from the brake lines.
• Ensure the brake fluid level in the master cylinder remains filled during this process.

5. Test the Brake System

• Tools Required: None
• After bleeding, press the brake pedal several times to ensure it feels firm.
• Start the vehicle and perform a low-speed test drive to confirm proper brake function.